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CircleCI vs GitHub

CircleCI scores higher on the AgentReady, 64/100 against 55/100. They differ on 6 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

CircleCI. CircleCI is a continuous integration and continuous delivery (CI/CD) platform that helps developers automate software delivery.

GitHub. GitHub is a platform where developers, agents, and code come together for collaboration.

Where CircleCI is ahead

CircleCI passes machine-readable metadata, and GitHub does not. That is discover, whether an agent can find the product at all without being told it exists.

It also holds understand: structured api reference and response examples provided. GitHub misses those.

And on adopt, no mandatory sales call and copyable quickstart. GitHub misses those.

Where GitHub is ahead

GitHub passes cli available, and CircleCI does not. That is adopt, whether an agent can get a key and make its first successful call without a human in the loop.

What neither does

Both fail openapi / spec quality, authentication documented, pricing understandable, request examples provided, errors and status codes documented, limits / constraints documented, self-service signup, programmatic credential creation, free trial or free allowance, fast time to first request, machine-readable errors, retry behavior documented, idempotency support, agent compatibility verified. If your agent needs any of those, you will be building it yourself either way.

Score, pillar by pillar

The AgentReady splits into four pillars, scored separately, because a product can be easy to find and still impossible to adopt.

Discover. CircleCI leads 100 to 93. CircleCI misses nothing; GitHub misses machine-readable metadata.

Understand is whether an agent can read the docs and work out how the API behaves before calling it. CircleCI leads 38 to 15. CircleCI misses openapi / spec quality, authentication documented, pricing understandable, request examples provided, errors and status codes documented, limits / constraints documented; GitHub misses structured api reference, openapi / spec quality, authentication documented, pricing understandable, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented.

Adopt. CircleCI leads 60 to 52. CircleCI misses self-service signup, programmatic credential creation, free trial or free allowance, fast time to first request, cli available; GitHub misses self-service signup, no mandatory sales call, programmatic credential creation, free trial or free allowance, fast time to first request, copyable quickstart.

Operate. Both sit at 59/100 here. CircleCI misses machine-readable errors, retry behavior documented, idempotency support, agent compatibility verified; GitHub misses machine-readable errors, retry behavior documented, idempotency support, agent compatibility verified.

Pricing

CircleCI does not publish a machine-readable starting price. GitHub does not publish one.

Signal by signal

Which to pick

CircleCI clears more of the signals an agent needs, so it is the safer default for unattended use. Full profiles: CircleCI and GitHub. Alternatives to each: CircleCI, GitHub.

An agent can fetch this as data: POST /v1/compare {"slugs": ["circleci", "github"]}